Prove that .
use this relationship to show that, if then
I have done the first part:
then for LHS
now my problem is the second part, after i subsitute into to get , i don't know what to do.
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Apply again the first identity for and replace back w.
thanks! i did that, and let and
so i had
now i'm stuck, doesn't give a value
If then b must be 0.
In this case
Last edited by red_dog; July 30th 2009 at 01:45 AM.
i thinking something along that line but didn't have any confirmation
Originally Posted by red_dog If then b must be 0.
In this case Whoops! I think you mean 'If then b must be 0'.
Originally Posted by Grandad Whoops! I think you mean 'If then b must be 0'.
Grandad Sorry! You're right! I've edited.
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